close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3054437

код для вставки
Sept. 18, 1962
3,054,434
s. AUSNIT ETAL
BAG CLOSURE
Filed May 2, 1960
/12
>
/
$9
A
Jferen Ausmf
07‘7‘0 Kar/M‘aaa
V
7
H
.5
iinited States Patent
ice
3,054,434
Patented Sept. 1a, 1962
i.
2
3,054,434
As shown on the drawings:
In accordance with the instant invention a bag or
BAG CLOSURE
said Krans assignor to said Ansnit
pouch, or similar container, shown generally at 7 in
FIGURE 1, is provided with a resilient type fastener
Filed May 2, 1960, Ser. No. 25,945
8 Claims. (Cl. 150-3)
structure shown generally at 8. The fastener structure 8
includes a pair of closure or fastener strips indicated gen
Steven Ausnit and Otto Karl Kraus, New York, N.Y.;
erally at 9, 9 which may be integral with the pouch 7 or
attached to the pouch as illustrated. A front fastener
such as a pouch or similar container having a new and
strip 19 and a rear fastener strip 16 have marginal flap
improved resilient type fastener structure particularly 10 portions 21 and 18 respectively which confront one ‘an
adapted to minimize accidental separation of the engaged
other. The fastener strips are herein referred to gen—
The present invention relates generally to an article
portions of the fastener structure when subject to load
erally by the numerals 9, 9 and when speci?c reference
forces.
is made to the rear and front strips the numerals 16 and
A primary object of this invention is to provide an
improved resilient type fastener structure for a pouch.
19 are used.
Another important object of this invention is to provide
Wall 10 and a resilient sheet-like pouch rear wall ‘11
The pouch 7 includes a resilient sheet~like pouch front
an improved resilient type fastener structure and slider
substantially coextensive therewith and the fastener strips
combination that can be opened at the top rather than
9, 9 comprise part of the front and rear walls 10‘ and 11.
at the side of a bag or pouch.
The pouch rear wall 11 is secured to the pouch front
A further object of the present invention is to provide 20 wall 10 along side edges, as at 12 and 13 and the bottom
a resilient type fastener structure which is capable of
edge 14. The pouch front and rear walls all can be one
being opened by means of a stamped low cost type of
piece with the piece being bent at the edge 14 if desired.
slider.
Preferably the pouch front and back or rear walls 10 and
Yet another object of the present invention is to pro
11 are made of sheets of thermoplastic synthetic mate
vide a new and improved resilient type fastener structure 25 rials such as polyvinyl chloride, polyvinylidene chloride,
on a bag or pouch along one of its edges which fastener
halogenated polyethylenes, polyvinyl acetate, and poly
structure will not readily become opened from overload
ing while the bag or pouch is being used.
According to the general features of the present in
vention, the bag or pouch is provided with an improved
resilient type fastener. The pouch includes a pouch front
ethylene, and copolymers, heteropolymers and mixtures
thereof. Such materials are substantially impervious to
air and moisture, and may be prepared in suitable thin
resilient sheets which can be translucent, and substan
tially transparent, so as to be suitable for use in the
wall and a pouch rear wall and front and rear fastener
instant pouch 7. The pouch front and back walls 10 and
strips are carried thereon respectively. The rear fastener
11 may be suitably heat sealed, sewed or glued together,
strip is provided with a spacer ?ap attached at the top
or both, along their marginal edges 12, 13 and 14, so as
of a web portion from which depends a thickened rear 35 to comprise the pouch 7. The pouch front and back
marginal ?ap portion in confronting relationship to a
front marginal ?ap portion. Mating ribs and grooves
are provided on the confronting marginal ?ap portions
extending lengthwise of the pouch and enabling the mar
ginal ?ap portions to be squeezed together to close the 40
pouch. A slider may be used for this purpose.
The rear fastener strip includes the spacer flap disposed
walls or the ‘walls to which the strips 9, 9 are attached
may also be made from other suitable materials such
as cardboard, if desired.
The fastener strips 9, 9 of the fastener structure 8 are
sealed or suitably attached as indicated at 15 to the pouch
front and rear walls 10 and 11. The rear fastener strip
19 of the fastener structure 8 includes the rear marginal
portion 18 which may be termed to be reverse bent.
in angular relation to the web portion and to the marginal
?ap portion thereby affording the pouch with means to
The rear fastener strip 16 has a spacer ?ap 17 disposed
resist separation of engaged rib and groove areas of the 45 in angular relation to a rear web portion 912 and the rear
fastener structure.
marginal portion 18. The spacer ?ap or lateral portion
Still another feature of the present invention relates
to an improved low cost type of pouch which may be
economically manufactured and is adapted for use with a
low cost type of slider enveloped over the top edge of the 50
pouch for opening and closing fastener structure disposed
along the top edge of the pouch.
Other objects and features of the present invention will
more fully become apparent in view of the following
detailed description taken in conjunction with the accom
panying drawings illustrating a single embodiment and
in which:
FIGURE 1 is a side elevation of a bag or pouch;
FIGURE 2 is an enlarged fragmentary cross-sectional
view illustrating the coaction of the slider with the
fastener structure;
FIGURE 3 is an enlarged fragmentary cross~sectional
view taken substantially on the line III—III loowing in
the direction indicated by the arrows, as shown in
FIGURE 1;
FIGURE 4 is an enlarged fragmentary cross-sectional
view taken substantially on the line IV-IV looking in
the direction indicated by the arrows as shown in FIG
URE 1; and ‘
17 extends laterally of and is integral with the rear web
portion 9b and the marginal portion 18, being formed
of one piece therewith, and is positioned above the longi
tudinal centerline of the marginal portions 18 and 21
when engaged.
The front marginal portion 21 is integral with a web
portion 10a and is thickened and outwardly offset to
form a downwardly facing shoulder 26.
Rib and groove structure indicated generally at 22 is
disposed between ‘the fastener strips 16 and 19 for clos
ing the top of the pouch to provide an airtight seal.
The fastener strips 19 and 16 are coextensive in length
with the front and back pouch walls 10 and 11 and span
the opening at the top of the pouch. In this respect it
will be noted that the back top portion 11a of the rear
web portion 9b extends above the top of the front web
portion 10a a distance equivalent to the vertical dimen
sion of the front marginal portion 21.
Each of the strips 16 and 19 can be conveniently fab-'
65
ricated simultaneously with the formation of the ‘asso
ciated pouch back and front walls 11 and 10‘. Suitable
materials for manufacturing the strips 9, 9 are thermo
plastic and thermosetting organic synthetic resins referred
FIGURE 5 is an enlarged fragmentary cross-sectional 70 to above in describing the pouch 7.
Of particular importance for this use are the vinyl
view of a modi?ed form of a sliderless type of a bag or
pouch.
type resins such as polyvinyl chloride, polyvinyl acetate,
3,054,434
3
41
polyvinyl chloride, polyvinyl acetate copolymers, and
includes an outwardly facing surface 29, and the rear
web portion 9b is further provided with a rib 30 which
extends the full length of the fastener structure 8. This
rib 30 also includes an outwardly facing surface 31 and
similar vinyl resins and polyethylenes and rubber, either
natural ‘or synthetic. Rubber, however, is not a pre
ferred starting material, since in the case of rubber, it is
more di?icult to control the degree of rigidity for inter
locking engagement between the strips 9, 9. However,
by proper compounding ‘and vulcanizing of rubber, the
a downwardly facing rear wall shoulder ‘or surface 32
which is disposed generally in a plane with the shoulder
26, and these shoulders 26 and 32 are adapted to coact
with the slider 25 in a manner hereinafter described in
order to secure the slider in assembly with the fastener 8.
The slider 25 includes 1a series of portions or ?anges
The spacer ?ap 17 is relatively thin in cross-section as 10
all of which are disposed in angular relation with respect
compared to the rear web portion 9b and the rear mar
to one another and which are indicated at 25a, 25b,
ginal ?ap portion 18 so as to make the bent marginal ?ap
25c, 25d, and 252. The general ‘shape of the slider 25
portion ?exible at its juncture with the rear web portion
is of a U and the free ends of the U are angled towards
912. In order to further render the relatively thin spacer
?ap 17 even more ?exible, the spacer ?ap 17 has an 15 one another which ‘free ends constitute the slider ?anges
degree of rigidity can be controlled to make the rubber
acceptable for the purposes of the instant invention.
enlarged notched area 17a along its underneath surface.
As noted in the drawings, the closure strips 16 and 19
are disposed to overlap so that the faces thereof are in
confronting relationship. The confronting faces of the
marginal portions 18 and 21 have a plurality of longitu
25a and 25e. The ?anges 25a and 25b converge with
respect to the ?anges 25d and 252, as shown in FIG
URES 2 and 3. The slider ?anges 25a and 25a are
adapted for engagement with the underside of the shoul
ders 26 and 32 so that when the slider 25 is in assembly
with the fastener 8 on the pouch 7, the coaction between
the ?anges 25a and 25s with the shoulders 26 and 32
dinally extending grooves 23 and ribs or ridges 24 formed
integrally therewith such that the grooves 23 on the
serve to sustain the slider on the fastener or pouch.
marginal ?ap portion 13v and the ribs 24 on the marginal
When the slider 25 is in assembly with the fastener
?ap portion 21 are in aligned relationship so as to be
adapted for locking engagement with one another.
25 ‘or pouch, the slider ?anges 25b and 250 are bottomed
‘against the fastener or pouch surfaces 27 and 28 while
This locking engagement is attained by vforming the
the slider ?ange 25a’ is spaced from the fastener or pouch
?ap portions 18 and 21 including the ribs and grooves
surface 29 by virtue of the rib 30.
23 and 24 of substantially similar cross-sectional shape.
Means is provided on the slider in the form of a slider
As may be noted, the flap portions 18 and 21 present
allochirally mateable grooves 23 and ribs 24-, on the con 30 partition 25]‘ for separating the ribs and grooves when
they are engaged together and {the pouch is closed. This
tiguous confronting faces thereof. The grooves 23 and
slider partition 25]‘ is disposed between and spaced from
ribs 24 ‘are arranged substantially normal to, or at right
the side ?anges or walls 25b and 25d of the slider and
angles to, the planes of the ?ap portions 18 and 21.
the slider partition 25)‘ is carried on the slider by virtue
The grooves 23 in one of the ?ap portions correspond
in shape to the ribs 24 in the other of the ?ap portions, 35 of its juncture and attachment with the slider wall or
?ange 250. The partition 25]‘ comprises a turned exten
and vice versa. Of course, one or more ridges may be
sion which is dependent from an edge of the ?ange 250
employed in each arrangement, with an equal number of
at the enlarged end of the slider.
grooves arranged subsantially as shown in the drawings.
In order to close the pouch after the slider 25 has
The head portion 24a of each rib 24 is enlarged and
the neck portion 24b is constricted, so as to ?t into an 4-0 been assembled on the fastener or pouch, the slider may
adjacent complementary groove 23 having a restricted
opening and an enlarged bottom portion, as shown.
be moved longitudinally in such a way that the ?anges
Also, the head portion 24a of each of the ribs 24 has
an undercut engaging surface 240 providing a portion
pouch surfaces 27 and 31 and effect a pincer type action
due to the convergence of the slider ?anges 25b and 25:!
overhanging the adjacent groove 23 adapted to engage a
similar undercut surface 240 of an opposite ridge 24.
In this way, a rib 24 on the ?ap portion 18 will be in
opposed contact with a corresponding undercut, engag
or side walls of the slider ‘engage with the fastener or
so that force is transmitted to the webs and to the ribs
and grooves to cause the ribs and grooves to become en
gaged together in locked assembly. To open the pouch,
the partition divider 25]‘ is thin enough or may be pro
vided with beveled edges for separating the engaged ribs
ing surface 240 of another rib 24011 the other ?ap por
tion 21 when a rib 24 on one ?ap portion is engaged in 50 and grooves as the slider 25 is moved in an opposite di
rection.
a groove 23 on the other ?ap portion or strip.
In FIGURE 5 is shown a modi?ed type of pouch 7'.
The undercut surfaces 24c may be inclined or may be
In this case, the pouch 7’ is identical to the pouch 7 ex—
in a plane substantially parallel with the plane of the
?ap portion, and substantially aligned therewith.
In order to provide a slider-type of pouch of the type
where the slider may be manufactured at low cost as a
stamping, it has been found that a most desirable way of
attaining this end is by mounting a slider at the top of
the pouch, as indicated at 25 in FIGURE 1. Due to the
?exibility of the fastener structure 8, 'a slider type of bag
or pouch 7 which opens along its top edge may now be
economically manufactured. This type of pouch will not
readily become accidentally opened by over loading in
view of the ?exibility of the fastener structure. The
slider may be formed of any suitable material such as
steel or brass.
‘In order to mount the slider at the top edge of the
pouch, the slider is preferably formed of a cross-sectional
con?guration which approximates the con?guration of
the fastener at the top edge of the pouch. As will be
noted in FIGURE 3, the top end of the fastener 8 in
cludes a downwardly facing front wall shoulder or sur
cept that this is a sliderless type of pouch. The pouch 7'
includes a pair of strips 9', 9’ which are identical to the
strips 9, 9 as shown in the ?rst ‘form of the invention
except that no shoulders are required to assist in holding
the slider onto the strips as was the case in the illustrated
form shown in FIGURES 1-4. In this case, each of the
6 strips is shown provided ‘with a vertical ?ange which
?anges are indicated at 40 and 41, respectively. ‘The
?ange ‘4-1 may be omitted, if desired, since one ?ange
will ‘function satisfactorily although with two ?anges, the
bag may be opened with greater case. In order to fa
cil-itate identification of the ?anges as means to assist
in the separation of the strips 9’, 9’ when they are en
gaged together, the ?anges may be colored differently
than the strips themselves. Excellent results may be ob
tained where the strips 9', 9’ are of a clear color while
0 one or both of the ?anges 40, 41 are of a red color.
As illustrated, the ?ange 40 comprises an integral ex
tension of a web portion 21' and extends above an up
face 26, the front marginal ?ap portion 21 has an out
wardly facing surface 28' ‘on the other of the strips.
The ?ange 41 may be disposed anywhere along the
wardly facing surface ‘27, the spacer ?ap 17 includes an
upwardly facing surface 28, the rear web portion 9b 75 transverse width of the top surface 28’ and, as illustrated,
3,054,434
5
the ?ange 41 is disposed approximately in the middle
of the surface 28'.
~
The strips 9’ on the pouch 7' may be operated in the
portion‘and joined thereto by a portion extending later
ally between said one marginal portion and its associated
web portion and being integral therewith formed of one
same way as the strips shown in connection with the
piece with said one marginal portion and its associated
?rst form of the invention in that the ribs and grooves 5 web portion, said lateral portion being above the lon
may be engaged with one another in the same Way. The
gitudinal centerline of the marginal portions when en
pouches 7 and 7' di?er from one another in that the
pouch 7' has at least one ?ange 40, and preferably two
?anges 40 and 41 to facilitate separation of the strips
9’, 9’ from one another when they are engaged to
gether. The ?anges 40 and 41 may be pulled apart to
etiect separation of the strips 9', 9'. As noted above one
gaged, said one marginal portion having its hook-shaped
rib element pointing in a direction opposing the direction
of its associated web portion, so that when forces are ap
10 plied to the web portions tending to separate the lock the
lock will be forced into a position with the hook-shaped
rib elements pulling against each other in the direction of
or both of the ?anges 40, 41 are preferably colored a
greatest resistance to separation.
color di?erent than the strips 9', 9' to facilitate identi?
5. A ?exible closure comprising a pair of ?exible clo
cation of the ?anges as means to assist in the separation 15 sure strips each having a web portion and a marginal por
of the strips.
It will be understood that modi?cations and variations
may be ettected without departing from the scope of the
novel concepts of the present invention.
tion integral therewith, the marginal portions having in
terlocking rib and groove elements extending therealong
and forming a lock between the marginal portions when
engaged, one of the marginal portions being alongside its
We claim as our invention:
associated web portion and joined thereto by a portion
1. A flexible closure comprising a pair of ?exible clo
extending laterally between said one marginal portion and
sure strips each having a web portion and a marginal
its
associated web portion and being integral therewith
portion integral therewith, the marginal portions having
formed
of one piece with said one marginal portion and
interlocking rib and groove elements extending there
associated web portion, said lateral portion being above
along and forming a lock ‘between the marginal portions 25 the
longitudinal centerline of the marginal portions when
when engaged, one of the marginal portions being along
engaged,
and a separating ?ange on the marginal portion
side its associated web portion and joined thereto by a
of
at
least
one of said strips for separating the strips and
portion extending laterally between said one marginal
the rib and groove elements and disengaging the lock.
portion and its assocated web portion and being integral
'6. A ?exible closure comprising a pair of ?exible clo
therewith formed of one piece with said one marginal
sure
strips each having a web portion and a marginal por
portion and associated web portion, said lateral portion
tion integral therewith, the marginal portions having in
‘being ‘above the longitudinal centerline of the marginal
portions when engaged.
terlocking rib and groove elements extending therealong
and forming a lock between the marginal portions when
2. A ?exible closure comprising a pair of ?exible
engaged,
one of the marginal portions being alongside
closure strips each having a web portion and a marginal 35
its associated ‘web portion and joined thereto by a portion
portion integral therewith, the marginal portions having
interlocking rib and groove elements extending therealong
and forming a lock between the marginal portions when
engaged, one of the marginal portions being alongside its
associated web portion and joined thereto by a portion
extending laterally between said one marginal portion
and its associated web portion and being integral there
with formed of one piece with said one marginal portion
extending laterally between said one marginal portion
and its associated web portion and being integral there
with formed of one piece with said one marginal portion
and associated web portion, said lateral portion being
above the longitudinal centerline of the marginal portions
when engaged, and a separating ?ange on the marginal
portion of at least one of said strips for separating the
strips and the rib and groove elements and disengaging
and associated web portion, said lateral portion being
the lock, said ?ange being colored di?erently than the
above the longitudinal centerline of the marginal portions
strips to facilitate identi?cation of the ?ange and assist
when engaged, the other of said marginal portions being 45 in
separation of the strips.
above its associated web portion.
7. A container having a ?exible closure comprising a
3. A ?exible closure comprising a pair of ?exible clo
pouch having front and back wall portions with upper
sure strips each having a web portion and a marginal por
edges to form a pouch opening, and a pair of ?exible clo
tion integral therewith, the marginal portions having in
sure strips each having a web portion and a marginal por
terlocking rib and groove elements extending therealong
tion integral therewith, the marginal portions having inter
and forming a lock between the marginal portions when
locking rib and groove elements extending therealong and
engaged, one of the marginal portions being alongside its
forming
a lock between the marginal portions when en
associated web portion and joined thereto by a pontion
gaged, one of the marginal portions being alongside its
extending laterally between said one marginal portion and
associated Web portion and joined thereto by a portion
its associated web portion and being integral therewith
extending
laterally between said one marginal portion and
formed of one piece with said one marginal portion and
its
associated
web portion and being integral therewith
associated web portion, said lateral portion being above
formed of one piece with said one marginal portion and
the longitudinal centerline of the marginal portions when
associated web portion, said lateral portion being above the
engaged, the other of said marginal portions being above
longitudinal centerline of the marginal portions when en
its associated web portion, with each of said marginal and
gaged, said web portions of the strips respectively attached
web portions connected so that when forces are applied to
to the individual upper edges of the pouch wall portion at
the web portions in the direction in which they extend to
tend to separate the lock the lock will be forced into a
position relative to the webs by which the rib and groove
elements ofr’er greatest resistance to separation.
4. A ?exible closure comprising a pair of ?exible clo
sure strips each having a vweb portion and a marginal por
tion integral therewith, each having at least one groove
element and each having at least one hook-shaped rib ele
ment extending therealong ‘and forming a lock between
the marginal portions when engaged, said groove and rib
elements shaped to coactingly interlock with said hook
shaped rib elements pointing toward each other, one of
a location below the marginal portions so that a reopen~
able closure is provided for the pouch opening at the top
of the pouch.
8. A ?exible closure comprising a pair of ?exible clo
sure strips each having a web portion and a marginal por
tion integral therewith, the marginal portions having inter
locking rib and groove elements extending therealong and
forming a lock between the marginal portions when en
gaged, one of the marginal portions being alongside its
associated web portion, and a spacer ?ap joining said one
marginal portion to its associated web portion and extend
ing laterally between said one marginal portion and its
the marginal portions being alongside its associated web 75 associated web portion and being integral therewith
3,054,434
8
formed of one piece with said one marginal portion and
its associated web portion, said spacer ?ap being located
above ‘the longitudinal center line of the marginal portions
when engaged.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,514,750
Dobbs et a1 ___________ __ July 11, 1950
2,637,085
2,674,289
2,780,261
2,789,609
Madsen _______________ __ May 5, 1953
Silverman _____________ __ Apr. 6, 1954
Svec __________________ __ Feb. 5, 1957
741,870
1,168,794
France ______________ __ Feb. 22, 1933
France ______________ __ Dec. 16, 1958
Post ________________ __ Apr. 23, 1957
FOREIGN PATENTS
Документ
Категория
Без категории
Просмотров
0
Размер файла
686 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа